4 ms·

ScalarArithmetic for Swift

40 points by seivan 12y ago

Arjuna 12y ago
Sigh... I've hit this issue. Everything looked great on 64-bit targets, but then a quick check of 32-bit targets revealed the flaw. My first workaround was to go down the conditional compilation path by using the "#if arch([...])" directive and writing specific code for 32-bit/64-bit. Of course, that works, but it just doesn't feel right, so I went with a casting solution instead. Hopefully this will be ironed out in subsequent beta versions of Xcode, so that we can feel a little more confident about this issue in advance of the final production version of Xcode.
- seivan 12y ago
  Yeah, it bothered me a lot, especially when toggling between architectures and noticing all those errors when It Should Just Work. At least the only casting you need to do is when doing myDouble = myPoint.x // This works on 64 bit out of the box but not 32bit. For now I try to avoid setting like that. Everything else including myDouble += myPoint.x should work fine with the library.
- deleted 12y ago
  [deleted]
d_v 12y ago
Has anyone tried using tgmath with Swift? I've been using it in Objective-C for some time with great results.
jerf 12y ago
I don't suppose just this once that HotNewLanguage(TM) could come out with HN being flooded with "HotNewLanguage can access web pages! HotNewLanguage can now talk to MySQL! HotNewLanguage has an SQLite binding! HotNewLanguage has an MVC web framework! HotNewLanguage just got a binding to ImageMagick! HotNewLanguage now has a newer, hotter way of accessing web pages! HotNewLanguage has a binding to inotify!" for the next six months? I am willing to stipulate that Swift is a Turing-complete more-or-less general purpose programming language.
- pohl 12y ago
  This rant would have been so much better if it somehow captured (or at least didn't clash with) the spirit of the link, which is certainly not a celebration (or even a mere observation) of how the language does scalar arithmetic.
- austinz 12y ago
  Some developer decides to show a utility library they wrote for better interoperability between 32 and 64-bit numerical types to Hacker News and this is the reaction? Right this very moment there's a REST library for Haskell on the front page, and Javascript libraries for various purposes show up on a semi-regular basis. Libraries, code, and frameworks for frivolous and serious purposes, for old and new languages alike, are constantly being posted to Hacker News. I honestly don't see how this is any different, except for this backlash to phantom hype which I find frankly quite puzzling.
  - jerf 12y ago
    Bookmark this and come back to it in a month or three.
  - seivan 12y ago
    Thanks! Also, I might have stolen your description as it is far better than mine :) "better interoperability between 32 and 64-bit numerical types"

40 points by seivan 12y ago

Sigh... I've hit this issue. Everything looked great on 64-bit targets, but then a quick check of 32-bit targets revealed the flaw. My first workaround was to go down the conditional compilation path by using the "#if arch([...])" directive and writing specific code for 32-bit/64-bit. Of course, that works, but it just doesn't feel right, so I went with a casting solution instead. Hopefully this will be ironed out in subsequent beta versions of Xcode, so that we can feel a little more confident about this issue in advance of the final production version of Xcode.

seivan 12y ago
Yeah, it bothered me a lot, especially when toggling between architectures and noticing all those errors when It Should Just Work. At least the only casting you need to do is when doing myDouble = myPoint.x // This works on 64 bit out of the box but not 32bit. For now I try to avoid setting like that. Everything else including myDouble += myPoint.x should work fine with the library.
deleted 12y ago
[deleted]

d_v 12y ago

Has anyone tried using tgmath with Swift? I've been using it in Objective-C for some time with great results.

jerf 12y ago

I don't suppose just this once that HotNewLanguage(TM) could come out with HN being flooded with "HotNewLanguage can access web pages! HotNewLanguage can now talk to MySQL! HotNewLanguage has an SQLite binding! HotNewLanguage has an MVC web framework! HotNewLanguage just got a binding to ImageMagick! HotNewLanguage now has a newer, hotter way of accessing web pages! HotNewLanguage has a binding to inotify!" for the next six months? I am willing to stipulate that Swift is a Turing-complete more-or-less general purpose programming language.

pohl 12y ago
This rant would have been so much better if it somehow captured (or at least didn't clash with) the spirit of the link, which is certainly not a celebration (or even a mere observation) of how the language does scalar arithmetic.
austinz 12y ago
Some developer decides to show a utility library they wrote for better interoperability between 32 and 64-bit numerical types to Hacker News and this is the reaction? Right this very moment there's a REST library for Haskell on the front page, and Javascript libraries for various purposes show up on a semi-regular basis. Libraries, code, and frameworks for frivolous and serious purposes, for old and new languages alike, are constantly being posted to Hacker News. I honestly don't see how this is any different, except for this backlash to phantom hype which I find frankly quite puzzling.
- jerf 12y ago
  Bookmark this and come back to it in a month or three.
- seivan 12y ago
  Thanks! Also, I might have stolen your description as it is far better than mine :) "better interoperability between 32 and 64-bit numerical types"